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prep07-2-150

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发表于 2011-7-24 11:32:37 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式
150. (32705-!-item-!-188;#058&007266)



Hydrocarbons, with which fruit flies perfume themselves in species-specific blends, are known to be important in courtship, and apparently this assists flies that taste the hydrocarbons on prospectivemates to distinguish their own species from that of others.    

(A) and apparently this assists flies that taste the hydrocarbons on prospective mates to distinguish their own species from that of

(B) and apparently this assists flies when they taste the hydrocarbons on prospective mates indistinguishing their own species from those of

(C) which apparently assists flies that taste the hydrocarbons on prospective mates in being able to distinguish their own species from

(D) apparently assisting flies to taste the hydrocarbons on prospective mates to distinguish theirown species from those of

(E) apparently assisting flies that taste the hydrocarbons on prospective mates in distinguishingtheir own species from
Their own species those of  others不是很对称吗?难不成flies可以直接等同于species吗?
然后Cwhich指代courtchip是怎么错误的,有些想不明白?Eassisting的主语是hydrocarbons。两者主语不一样,怎么解释C是错的?答案是E,谢谢



Their own species those of  others不是很对称吗?难不成flies可以直接等同于species吗?
然后Cwhich指代courtchip是怎么错误的,有些想不明白?Eassisting的主语是hydrocarbons。两者主语不一样,怎么解释C是错的?答案是E,谢谢
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沙发
发表于 2011-8-1 23:22:26 | 只看该作者
这里的others指代的是species,而不是flies.  如果用those of others 与their own species平行的话,those指代species, others 指代other flies.但是前面说的是assisting flies to taste ...这里写的是flies,而不是某个种类的flies,所以如果用others代替other flies的话,other没有排除对象。

第二个问题,C中的which不应该指代courtship,因为assist的主语不是courchip,而是hydrocarbons。courtship意为“求爱期”,做assist的宾语不合逻辑

另外,如果考试的时候不知道单词含义,又需要判断逻辑关系或者某个动词的主语时,看一下原句,以原句中的逻辑关系和动词主语为主,90%是对的。
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